Constraints on water activity at the Zhurong landing site in Utopia Planitia,Mars  

作　　者：ChengZheng Yong ZiYao Fang CongCong Zhang JunFeng Zhen LiPing Qin 

机构地区：[1]Deep Space Exploration Laboratory/Chinese Academy of Sciences Key Laboratory of Crust-Mantle Materials and Environments,University of Science and Technology of China,Hefei 230026,China [2]Chinese Academy of Sciences Center for Excellence in Comparative Planetology,Hefei 230026,China [3]Chinese Academy of Sciences Key Laboratory for Research in Galaxies and Cosmology,Department of Astronomy,University of Science and Technology of China,Hefei 230026,China

出　　处：《Earth and Planetary Physics》2023年第3期356-370,共15页地球与行星物理（英文版）

基　　金：funded by the Strategic Priority Research Program (B) of Chinese Academy of Sciences (Grant No. XDB41000000);the National Natural Science Foundation of China (Grant No. 41930216);the Pre-research Project on Civil Aerospace Technologies (Grant No. D020202) of the Chinese National Space Administration;the Fundamental Research Funds for the Central Universities of China (Grant No. WK3410000019)。

摘　　要：Mineralogical evidence of water–rock interactions is a strong indicator of the presence of liquid water on ancient Mars.Previous observations have found widely distributed hydrated minerals in the southern highlands,whereas such discoveries have been rare in the younger northern lowlands.China’s first Mars exploration mission successfully landed a rover(Zhurong)in southern Utopia Planitia,providing an opportunity to analyze the exposed rocks in the northern lowlands.Using data from the short-wave infrared(SWIR)spectrometer and the laser-induced breakdown spectrometer(LIBS)onboard the Zhurong rover,we found evidence for the widespread presence of hydrated minerals(probably sulfates or silica)around the landing site.The basaltic-like elemental compositions of the targeted samples further indicated that hydrated minerals are likely minor components.The results from Zhurong suggest that active aqueous activities occurred during the overall cold and dry Amazonian era on Mars.However,further evaluations are needed on the duration and scale of these activities.

关 键 词：Zhurong rover hydrated mineral water activity Amazonian 

分 类 号：V476.4[航空宇航科学与技术—飞行器设计] P185.3[天文地球—天文学]